I recently had a Loan and what I would do is make two payments. The first was the minimum payment due, then the second payment would be whatever extra I wanted to pay on the principal. I paid off my loan six months early and saved on interest. It really depends on what type of loan you get so I always recommend when buying a car to ask the lender if you can do so without penalty. I have heard some lenders will not let you pay on the principal unless you are doing a payoff.
